Production and decay of the F meson in e+e− annihilation at 10 GeV centre-of-mass energy
1985; Elsevier BV; Volume: 153; Issue: 4-5 Linguagem: Inglês
10.1016/0370-2693(85)90562-3
ISSN1873-2445
AutoresH. Albrecht, U. Binder, G. Drews, G. Harder, H. Hasemann, A. Philipp, W. Schmidt‐Parzefall, H.-Ch. Schröder, H.D. Schulz, F. Selonke, R. Wurth, A. Drescher, B. Gräwe, W. Hofmann, A. Markees, U. Matthiesen, H. Scheck, J. Spengler, D. Wegener, R. Heller, K. R. Schubert, J. Stiewe, R. Waldi, S. Weseler, N.N. Brown, K. W. Edwards, W.R. Frisken, C. Fukunaga, D.J. Gilkinson, D. M. Gingrich, M. Goddard, P.C.H. Kim, R. Kutschke, D. B. MacFarlane, J. A. McKenna, K. W. McLean, A.W. Nilsson, R. S. Orr, P. Padley, P. M. Patel, J.D. Prentice, H. Seywerd, B.J. Stacey, T.-S. Yoon, J. C. Yun, R. Ammar, D. Coppage, R. Davis, S. G. Kanekal, N. Kwak, P. Böckmann, L. Jönsson, Y. Oku, M. Danilov, V. Lubinov, V. Matveev, N. Nagovitsin, V. Ryltsov, A. Semenov, Yu. A. Semënov, V. Shevchenko, V. Soloshenko, V. Sopov, I. Tichomirov, Y. Zaitsev, R. Childers, C.W. Darden, H. Gennow,
Tópico(s)Quantum Chromodynamics and Particle Interactions
ResumoUsing the ARGUS detector at DORIS, we have observed the production of F± mesons in e+e− annihilation at a centre of mass energy of 10 GeV through their subsequent decays into φπ± and φπ+π−π±. The values obtained for [R(e+e−→FX). Branching Ratio] are (1.47 ± 0.32 ± 0.20)% and (1.63 ± 0.42 ± 0.41)% respectively. The observed mass is (1973.6 ± 2.6 ± 3.0)MeVc2. The F momentum spectrum is as expected for the fragmentation of c quarks into charmed mesons, but is somewhat softer than for fragmentation into D∗ mesons. The relevant angular distributions are consistent with a spin-zero assignment of the F meson.
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